Minor cleanups.

1. connect convenience variable for improved readabilty.
2. a comment explaining that timer is on channel, not HTLC.
3. use modern python style in test_htlc_send_timeout

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

connectd/connect.c

@@ -1073,6 +1073,7 @@ static void try_reach_one_addr(struct reaching *reach)
 {
  	int fd, af;
 	bool use_proxy = reach->daemon->use_proxy_always;
+	const struct wireaddr_internal *addr = &reach->addrs[reach->addrnum];
 
 	if (reach->addrnum == tal_count(reach->addrs)) {
 		connect_failed(reach->daemon, &reach->id, reach->seconds_waited,
@@ -1084,7 +1085,7 @@ static void try_reach_one_addr(struct reaching *reach)
  	/* Might not even be able to create eg. IPv6 sockets */
  	af = -1;
 
-	switch (reach->addrs[reach->addrnum].itype) {
+	switch (addr->itype) {
 	case ADDR_INTERNAL_SOCKNAME:
 		af = AF_LOCAL;
 		/* Local sockets don't use tor proxy */
@@ -1100,7 +1101,7 @@ static void try_reach_one_addr(struct reaching *reach)
 		use_proxy = true;
 		break;
 	case ADDR_INTERNAL_WIREADDR:
-		switch (reach->addrs[reach->addrnum].u.wireaddr.type) {
+		switch (addr->u.wireaddr.type) {
 		case ADDR_TYPE_TOR_V2:
 		case ADDR_TYPE_TOR_V3:
 			use_proxy = true;
@@ -1135,7 +1136,7 @@ static void try_reach_one_addr(struct reaching *reach)
 		tal_append_fmt(&reach->errors,
 			       "%s: opening %i socket gave %s. ",
 			       type_to_string(tmpctx, struct wireaddr_internal,
-					      &reach->addrs[reach->addrnum]),
+					      addr),
 			       af, strerror(errno));
 		reach->addrnum++;
 		try_reach_one_addr(reach);

lightningd/peer_htlcs.c

@@ -445,7 +445,7 @@ enum onion_type send_htlc_out(struct channel *out, u64 amount, u32 cltv,
 			    payment_hash, onion_routing_packet, in);
 	tal_add_destructor(hout, destroy_hout_subd_died);
 
-	/* We give it 30 seconds to commit htlc. */
+	/* Give channel 30 seconds to commit (first) htlc. */
 	if (!out->htlc_timeout)
 		out->htlc_timeout = new_reltimer(&out->peer->ld->timers,
 						 out, time_from_sec(30),

tests/test_misc.py

@@ -807,15 +807,16 @@ def test_htlc_send_timeout(node_factory, bitcoind):
     # tries to ping before sending WIRE_COMMITMENT_SIGNED.
     time.sleep(30)
     inv = l3.rpc.invoice(123000, 'test_htlc_send_timeout', 'description')
-    try:
+    with pytest.raises(RpcError) as excinfo:
         l1.rpc.pay(inv['bolt11'])
-    except RpcError as err:
-        # Complaints it couldn't find route.
-        assert err.error['code'] == 205
-        # Temporary channel failure
-        assert only_one(err.error['data']['failures'])['failcode'] == 0x1007
-        assert only_one(err.error['data']['failures'])['erring_node'] == l2.info['id']
-        assert only_one(err.error['data']['failures'])['erring_channel'] == chanid2
+
+    err = excinfo.value
+    # Complaints it couldn't find route.
+    assert err.error['code'] == 205
+    # Temporary channel failure
+    assert only_one(err.error['data']['failures'])['failcode'] == 0x1007
+    assert only_one(err.error['data']['failures'])['erring_node'] == l2.info['id']
+    assert only_one(err.error['data']['failures'])['erring_channel'] == chanid2
 
     # L1 should send a ping beforehand, and get reply, then send commitment.
     l1.daemon.wait_for_log('channeld.*:\[OUT\] 0012')